Description
Electric central locking lock for the left rear door for PEUGEOT 407. Rear door on the driver’s side.
This replacement electric central locking lock (left rear door) is designed for Peugeot 407 vehicles and restores reliable door latching and remote locking/unlocking. Ideal for professional workshops and DIY mechanics who search by OE number (often listed as 9659854180 or reference codes 9137K8 / 9137Q7). The unit operates the latch mechanism and links to the central locking system to lock and unlock the rear left door with the vehicle’s remote, central locking switch, or BSI commands.
Benefits And Key Features
– Direct replacement for the original door lock unit, matching OEM mounting points and electrical connector layout where specified.
– Restores secure door closure and prevents false open/lock signals that can cause central locking faults.
– Commonly sought by part number (9659854180) making it easy to find and replace the failing component.
– Durable construction with integrated electric actuator and mechanical latch gear.
Typical Symptoms Indicating Replacement
– Rear left door does not lock or unlock with remote or central locking switch.
– Intermittent operation or the door locks only after several attempts.
– Audible grinding or clicking inside the door when operating the lock (sign of worn gears or motor).
– Door remains ajar or does not latch properly after closing.
How The Part Works
The unit houses an electric actuator that drives the latch mechanism to engage or release the locking pawl. It receives low-voltage signals from the vehicle’s central locking control (via wiring and connectors) and converts them into mechanical motion that locks or unlocks the door. Proper function depends on a good electrical connection, intact linkage rods, and a mechanically sound latch assembly.
Installation Recommendations
– Always work in a safe environment with the vehicle stationary. Disconnect the negative battery terminal before starting to avoid short circuits and protect vehicle electronics.
– Remove the inner door trim/panel carefully to access the lock assembly. Take care with trim clips and any moisture barriers.
– Disconnect the electrical connector and detach the control rods/linkages from the lock unit. Note the orientation of rods for correct reassembly.
– Unscrew the retaining bolts and remove the old lock. Install the new unit, secure bolts to the correct torque, reconnect linkages and the electrical plug, and test operation before reassembling the door panel.
– After installation, verify central locking operation from the remote and from the master lock switch. Lubricate moving parts with suitable grease if necessary.
Why This Part Fails Most Often
– Water Ingress And Corrosion: Moisture can penetrate door internals, causing corrosion of electrical contacts and mechanical parts.
– Mechanical Wear: Plastic gears and small components inside the actuator wear out over time, especially on high-mileage vehicles.
– Motor Or Gear Failure: Actuator motor brushes or gears can fail, producing grinding noises and loss of function.
– Linkage Damage Or Misalignment: Broken or misaligned rods and clips prevent proper movement even if the actuator is functional.
– Electrical Issues: Connector corrosion or damaged wiring can interrupt the power supply to the actuator.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Peugeot 407 (including Sedan, SW and Coupé variants)
- Product Codes: 9659854180
- Additional Numbers: 9137K8, 9137Q7
Practical Tips For Mechanics
– Before replacing, check supply voltage and ground at the connector when operating the central locking to confirm the fault is in the actuator and not a wiring or control issue.
– Inspect door moisture seals and drainage to prevent repeat failures from water ingress.
– When fitting, ensure linkages move freely and that the latch engages fully; test both manual and remote locking cycles.
– Keep a record of the OE number (9659854180) when ordering to speed up sourcing and ensure correct fitment.
Why Choose This Unit
Replacing a faulty rear left door lock with the correct OE-referenced unit restores secure closure, prevents central locking errors, and avoids electrical faults caused by damaged actuators. The part is optimized for Peugeot 407 applications and is a common, direct-fit replacement sought by professionals and DIY enthusiasts alike.
